If one is too worried about the Note 7 exploding, just switched it off and don't use it. Wait for replacement to come in
My friend who bought over my unit isn't worried about it all. It is his daily work phone and he used it heavily daily. He had been a diehard Note user since the first Note. He is in the media-advert business. He simply cannot live without the SPen ! He had a spare ip6 as a spare phone if needed. He had nothing but only praises for the Note 7 which he said is a vast improvement over his ex Note 5. He has yet to experienced any sudden reboot, freeze/hung issues as reported by some users here